While the bloated isekai genre is awash with harems of highly marketable waifus, not every isekai anime is an ecchi isekai anime. Some give you plenty of good bait, but lack anything to bait to, if you will.
That said, while not every isekai anime is an ecchi isekai anime, the isekai series that are ecchi can go so wildly far that it can sometimes make you wonder how it wasn’t classified as a hentai.
If you are looking for ecchi isekai anime to titillate you, then check out these anime recommendations.
Ecchi Isekai Anime
No Game No Life
It its the potent mix of combining isekai with clever games and just the right amount of ecchi that has made No Game No Life a long-beloved series.
No Game No Life focuses on a step-sibling duo of shut-ins who are a legendary gaming team online. One day, they are sent to another world where every disagreement – from who cooks dinner to who rules what nation – is settled by playing a game.
Now, typically anime with ecchi is not so intricate with the non-ecchi portions, but No Game No Life hooks you with a variety of clever games being played and creates a unique isekai world. It just also acknowledges that the occasionally flashed patch of shiny flesh sells Blu-Rays.
How NOT to Summon a Demon Lord
Unlike the standard isekai anime that features a shut-in main character developing his social skills in a new life, How NOT to Summon a Demon Lord gives the main character an easy out by just having him end up with obedient slaves that find him just delightful.
How NOT to Summon a Demon Lord follows a shut-in gamer who is one day summoned to a fantasy world as his OP demon king game character. When the two elves that summoned him try to subjugate him with an enslavement ritual, it backfires and they end up as his slaves instead.
While kind to them, it does open the door for heaps of fan service. While there are ecchi isekai anime that go much further in physical relationships, there are few that are as frequent with the fan service as How NOT to Summon a Demon Lord.
Jobless Reincarnation
There are those who heap praise on Jobless Reincarnation for its interesting world building, plot, and beautiful animation. Then there are those who remember Jobless Reincarnation for the frequent sex it injects into the show to the point where it became uncomfortable to continue watching.
Jobless Reincarnation follows a shut-in who was chased out of his NEET nest and hit by a car saving some girls. He is reborn as the son of a knight with an aptitude for magic. While he starts as a baby, he still has the mind of a middle aged man, and a middle aged man that already liked dangerously young girls at that.
While not as comically fan service as other isekai anime on this list, Jobless Reincarnation has a lot of horny. Sex is frequently on his brain, and it is one of the rare isekai anime where he actually has it.
The Familiar of Zero
While a bit of an older isekai from the days where characters were more moe than sexy and tsudneres were legally allowed to get wildly violent with the men they like, The Familiar of Zero also didn’t shy away from fan service.
The issue really is that moe – as well as flat-chested tsunderes – aren’t always the most compelling targets for fan service, but bless this series for including female characters that are a little more fun to watch glisten and bounce.
The series focuses on a mage with the reputation for always messing up her magic. So, naturally, when she goes to summon a familiar, she messes it up and accidentally summoned what appears to be an average Japanese boy. While he bears the mark that suggests he is a legendarily powerful familiar, she, being a tsundere, certainly doesn’t treat him as such.
Although the series develops into a fine romance eventually, the relationship for a long while is classic abusive tsundere.
Aesthetica of a Rogue Hero
In truth, Aesthetica of a Rogue Hero isn’t an isekai. It’s more of a “what comes after” the isekai adventure since it follows one of many teens who got sent to another world, but chose to come back after.
Regardless of the semantics, it has the only thing that matters – ecchi.
While Aesthetica of a Rogue Hero misses no chances to break out the booba, it also enjoys using its ecchi for degenerate comedy as well.
The main character is the sort of wildly overpowered isekai protagonist that is confident and cocky, therefor, he uses his abilities as he pleases. Sometimes it is defending his harem, sometimes it is magically linking all their bladders so they lewdly pee themselves. You know, normal isekai hero things.
Harem in the Labyrinth of Another World
If you are on the hunt for ecchi isekai anime, Harem in the Labyrinth in Another World really should be your first stop – or maybe your last stop, because it is easily the lewdest (and most graphic) on this list.
In truth, Harem in the Labyrinth in Another World just has isekai as a set up. It features a main character who ends up in another world, and uses his new life to buy a slave girl to “help him adventure” more effectively. While they do go adventuring, every adventure, and most episodes after the purchase, end with them going home and having some graphic sex.
Eventually the series does remember that its title is “Harem” in the Labyrinth of Another World and rushes to introduces another girl into the mix by the end, but that just feels like it wanted to have a threesome scene, because that’s what it did.
Tenchi Muyo! War on Geminar
Tenchi Muyo is an older anime and one with a confusing continuity. However, you don’t actually need to concern yourself with any of that because War on Geminar is a completely standalone Tenchi Muyo story, though the other series essentially show you how and why the main character is so well-prepared for the situation he is put in. Yet, if you consider him the now-standard OP isekai protagonist that you see everywhere else, you don’t need it explained to you.
Anyway, War on Geminar follows a boy kidnapped and taken to another world by a mysterious group to assassinate an empress. While that plan is quickly foiled, he becomes servant to the empress because he is a man, something very rare on that planet.
I feel like you know where this is going but while stuffed full of women and frequently ecchi, War on Geminar is actually quite dedicated to its surprisingly good war plot.
Tsukimichi – Moonlit Fantasy
Tsukimichi is one of those isekai adventures that has a plot, but also doesn’t take itself too seriously. It has everything you like about isekai, but it also just lets things be fun sometimes.
The series follows a boy who discovers his parents were from a fantasy land. When he goes back to this fantasy land, the goddess of that world finds him utterly repulsive and flings him to the farthest corner to keep him away from her beautiful humans. Fortunately for him, she gifted him the ability to understand beast-man speech and the god from Earth granted him great power. He almost immediately defeats two beast-women that join him as followers and accidentally founds a haven for the beast people.
The rest of the series is him trying to connect with actual humans, having to hide his face and power, and often comically failing if not because of his flaws, then because of his small harem causing problems.
While his harem is small, Tsukimichi always makes some time to show off how much they love him and show off all their best features.
In Another World With My Smartphone
In Another World With My Smartphone is what I would call “boilerplate isekai.” It has everything you like about isekai, and does really nothing different from the rest of the writhing mass. Even its unique hook – the smartphone – is trivial since it should be called “In Another World With My Magnificent OP Magic” since that is what he uses most often.
That said, boilerplate isn’t bad. Especially when that boilerplate include fan service. Admittedly, the fan service in In Another World With My Smartphone isn’t as frequent as some other ecchi isekai anime, but it is definitely there. Furthermore, his harem is numerous and they all pretty much decide to harmoniously marry him.
As for the plot, this is an isekai where the plot is in the title. He is in another world, he has a smartphone, he is OP, and he often just sort of wanders from one adventure to the next with no overall goal.
The Master of Ragnarok & Blesser of Einherjar
Like In Another World With My Smartphone, The Master of Ragnarok & Blesser of Einherjar is another isekai where the unique hook is that the main character has a smartphone, but with the very important difference of at least trying to have a different sort of world.
While it is an isekai that tries to be creative with its world of clan-based warfare, it doesn’t necessarily succeed in being a good isekai. However, if you aren’t looking for a particularly riveting plot, it does have the most important element – lots of women to lewd up.
The female characters are numerous, scantily clad, and well in love with the main character. In fact, the amount of cute waifus is probably the best thing this series has going for it.
The Fruit of Evolution – Before I Knew It My Life Had It Made
Maybe it is something about beast girls, but when an isekai has them, boy does it like to lewd them up as frequently as possible.
Not unlike Tsukimichi, The Fruit of Evolution doesn’t take itself very seriously. In fact, it is the most fun when it does let things be silly.
The series follows a class that gets isekai’d to a new world. As the main character was a chubby nerd, he was left out of the group and thus transported far away from them. After eating a random fruit he took from some monkeys, he finds that the fruit evolves him into the literal pinnacle of humanity.
As the literal pinnacle of his species, he gathers himself a harem and has the usual isekai adventures. While doing that, it never misses a chance to show you how much it loves shiny flesh.
Tales of Wedding Rings
This series follows a princess from another world sent to our world for her protection. While here, she forms a strong bond with a neighborhood boy. So of course when she goes back to face her destiny, he follows her immediately.
Interrupting what turns out to be her wedding, he marries her instead and becomes the Ring King. Unfortunately (Fortunately?), for him, he now has to marry several other girls from neighboring nations in order to collect all the rings he needs to slay the Abyss King.
While the series has a very obvious “I just want to make a harem series” plot, it does put more world building effort in than usual. However, the important thing that it has a whole lot of is big old booba and lots of skin shine.
Do you have more ecchi isekai anime that fans may enjoy for perfectly innocent reasons? Let fans know in the comments section below.
